AhmedTarekHasan

using System;

namespace SmallMethods
{
    public class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Started");
            var result1 = GetResultRecursively(50_000, 40_000);

AhmedTarekHasan

using System;

namespace LargeMethod
{
    public class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Started");
            var result = GetResultRecursively(20_000);

AhmedTarekHasan

using System;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

namespace Benchmarking
{
    public class Program
    {
        static void Main(string[] args)
        {

AhmedTarekHasan

public class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine(Run());
        Console.ReadLine();
    }

    public static decimal Run()
    {

AhmedTarekHasan

public abstract class TaxCalculator
{
    private readonly Func<TaxCalculator, decimal> _calculateDelegate;

    protected TaxCalculator()
    {
        // Generate the function only once and then call it many times.
        _calculateDelegate = BuildExpression(this).Compile();
    }

AhmedTarekHasan

public class TaxCalculator1 : TaxCalculator
{
    protected override bool CanCalculateExpenses => false;
    protected override bool CanCalculateIncomeTax => true;
    protected override bool CanCalculateVat => false;


    // No logic to apply. Therefore, just return 0.
    protected override decimal CalculateExpenses(decimal input)
    {

AhmedTarekHasan

public class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine(Run());
        Console.ReadLine();
    }

    public static decimal Run()
    {

AhmedTarekHasan

public abstract class TaxCalculator
{
    public decimal CalculateTaxes()
    {
        decimal total = 1436;

        if (this is ICalculateExpenses expensesCalculator)
        {
            // This call would be skipped in case of TaxCalculator1
            total += expensesCalculator.CalculateExpenses(1436);

AhmedTarekHasan

public class TaxCalculator1 : TaxCalculator, ICalculateIncomeTax
{
    public decimal CalculateIncomeTax(decimal income)
    {
        return income + 100;
    }
}

public class TaxCalculator2 : TaxCalculator, ICalculateExpenses
{

AhmedTarekHasan

public interface ICalculateExpenses
{
    decimal CalculateExpenses(decimal input);
}

public interface ICalculateIncomeTax
{
    decimal CalculateIncomeTax(decimal income);
}